/*
 * https://github.com/arduino-libraries/NTPClient/blob/master/NTPClient.h
 ESP8266 ESP8266_HW-341A Rouge   2x15 pins
 BOARD : NodeMCU 1.0 (ESP_12E Module) nodemcuv2
 ESP-D2823A
 mac address: 84:F3:EB:D2:82:3A
 
 Summer time starts 03:00:00 CET Sun Mar 29 2015
Summer time ends 02:00:00 CET Sun Oct 25 2015

*/

#include <Arduino.h>
#include <Adafruit_Sensor.h>

// Appel des bibs
#include <NTPClient.h>
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
#include <U8g2lib.h> // version 2.23.15 installed
#include <Wire.h>
// adresse I2C = 0x78
// voir nodemcu_esp8266_pinout.jpg

#include <time.h>
#include <OneWire.h>
#include <DallasTemperature.h>

#define SCL 12    // D6 GPIO12
#define SDA 14    // D5 GPIO14

#define VERSION "29-05-2025"
//#define VERSION "04-11-2024"
#define DIRECTORY "D:\\_ESP8266_avec_OLED_HW-364A_2025\\_ESP8266_HW364A-Rouge_server_NTP_2025"
#define MODULE "ESP8266_HW-341A ESP-D2823A"
#define BOARD "NodeMCU 1.0 (ESP_12E Module) nodemcuv2"

#define LED_Bleue 4      //led bleue 2 (pull Up) interne au module ESP
// Declarations WIFI
const char* ssid = "Freebox-5CF3C9";
const char* password = "mittebant-lacrymula.-fimbri-inmensum";

// Création des objets
const int oneWireBus = 4; // ATTENTION ! pin repérée D2 ... DS18B20 
OneWire ds(oneWireBus);// Setup a oneWire instance to communicate with OneWire devices (DS18B20)
DallasTemperature sensors(&ds);// Pass our oneWire reference to Dallas Temperature sensor
float tempC;

// Variables de travail
int i;
int j;
int k;
unsigned long epoch = 0;
int nujour = 0; //numero jour de la semaine avec 0 pour dimanche
String jour = "mon jour"; // dimanche, lundi, etc.
String heure = "mon heure ..";
char buffer[80]; // Stockage de la date complete
float temperatureC ;
byte addr[8];
#define HIVER '1'
#define ETE  '0'
int jd;
int m1;
int mn;
int hh;
int CH=HIVER;
int Once=1; 


// Declaration des couleurs
#define BLACK           0x0000
#define BLUE            0x001F
#define RED             0xF800
#define GREEN           0x07E0
#define CYAN            0x07FF
#define MAGENTA         0xF81F
#define YELLOW          0xFFE0
#define WHITE           0xFFFF

unsigned long lastTime = 0;
unsigned long timerDelay = 4500;  //4sec

U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0,SCL,SDA, U8X8_PIN_NONE);

void setBusClock(uint32_t clock_speed);

IPAddress local_IP(192, 168, 1, 11);
IPAddress gateway(192, 168, 1, 254);
IPAddress subnet(255, 255, 255, 0);
IPAddress primaryDNS(212,27,40,241);   //optional
IPAddress secondaryDNS(212,27,40,240);   //optional

//Creation objet WIFI UDP
WiFiUDP ntpUDP;

//Creation objet client NTP avec les parametres suivants :
// - pool de serveurs NTP
// - en option le décalage horaire en secondes, ici 3600 pour GMT+1, pour GMT+8 mettre 28800, etc.
// - en option l intervalle de mise à jour en millisecondes par défaut à 60 secondes
NTPClient timeClient(ntpUDP, "europe.pool.ntp.org", 7200, 60000); // hiver

String readDSTemperatureC() {
 // Call sensors.requestTemperatures() to issue a global temperature and Requests to all devices on the bus
 sensors.requestTemperatures(); 
 float tempC1 = sensors.getTempCByIndex(0);
 if(tempC1 == -127.00) {
    Serial.println("Failed to read from DS18B20 sensor");
    return "--";
  } else {
   Serial.print("Temperature Celsius: ");
   Serial.print(tempC1); 
    Serial.println(" degC");
 }
  return String(tempC1);
}

void OneWireScanner(){
  if ( !ds.search(addr))
  {
    Serial.println(" No more addresses.");
    Serial.println();
    ds.reset_search();
    return;
  }
  Serial.print(" ROM = ");
  for( i = 0; i < 8; i++)
  {
    Serial.write(' ');
    Serial.print("0x");
    if (addr[i] < 0x10) Serial.write('0');
    Serial.print(addr[i], HEX);
    if ( i != 7 ) {
      Serial.print(", ");
    }
   }
   if (OneWire::crc8(addr, 7) != addr[7]) {
      Serial.println("CRC is not valid!");
      return;
  }
  Serial.println();
   // the first ROM byte indicates which chip
  switch (addr[0]) {
    case 0x10:
      Serial.println("  Chip = DS18S20");  // or old DS1820
     // type_s = 1;
      break;
    case 0x28:
      Serial.println("  Chip = DS18B20");
     // type_s = 0;
      break;
    case 0x22:
      Serial.println("  Chip = DS1822");
     // type_s = 0;
      break;
    default:
      Serial.println(" other family device.");
      return;
  } 
    Serial.println();
}


void setup(){
  // Demarrage liaison serie
  Serial.begin(115200);
  // Demarrage ecran oled ssd1331
  // Connection au reseau WIFI
  Serial.begin(115200);
  Serial.println("\r\n");
  Serial.print(" Directory : ");
  Serial.println(DIRECTORY);
  Serial.print(" MODULE : ");
  Serial.println(MODULE);
  Serial.print(" BOARD : ");
  Serial.println(BOARD);
  Serial.println(F(" ESP8266 NodeMCU ESP-D2823A avec SSD1306 OLED inclus\r\n"));
  Serial.print(" _ESP8266_HW364A-Rouge_server_NTP_2025 ");
  Serial.println(VERSION);
   Serial.println(" NTP Server: europe.pool.ntp.org");
  Serial.println(" <U8g2lib.h> version 2.23.15 installed");
  Serial.println(" D5=SDA=GPIO14,D6=SCL=GPIO12,I2C@=0x78\r\n DS18B20 sur pin D2");
  Serial.print("\r\n ESP getCoreVersion : ");
  Serial.println(ESP.getCoreVersion());
  Serial.print(" ESP getSdkVersion : ");
  Serial.println(ESP.getSdkVersion() );
 
  
  u8g2.setBusClock(600000);
  u8g2.setI2CAddress(0x78);  // LCD
  pinMode(LED_Bleue, OUTPUT);  //
  digitalWrite(LED_Bleue, LOW);
  delay(1000);
  digitalWrite(LED_Bleue, HIGH);
  delay(1000);
   // Start up the DS18B20 library
  sensors.begin();
  Serial.println("\r\n Scan OWS Sensors :");
  OneWireScanner();
  Serial.print(" ");
  //Serial.println(readDSTemperatureC());
  readDSTemperatureC();
 
  
  u8g2.begin(); 
  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_7x14B_tf);
  u8g2.drawStr(0,14, " NTP Server  ");
  u8g2.drawStr(10,28,"ESP8266 341A ");
  u8g2.drawStr(10,42,"I2C @0x78    ");
  u8g2.drawStr(10,56,"D5=SDA D6=SCL");
  u8g2.sendBuffer();
  delay(4000);
  j=0;

  Serial.println(" Attente connection STAtion Wifi\r\n");
  
  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_ncenR18_tf ); // Font size 18
  u8g2.drawStr(10, 38,"Wait Wifi");
  u8g2.sendBuffer();
 
  WiFi.begin(ssid, password);
  while ( WiFi.status() != WL_CONNECTED ) {
    delay ( 500 );
    Serial.print ( "." );
  }
   Serial.println ( "." );
  // Demarrage client NTP
  timeClient.begin();
}


void loop() {

  
 
   /*
   if ( ( m1==0x03) && (jd>0x24) && (nujour==7) && (heure==0x02) && (mn==0x00) && (CH==HIVER)) 
     {
       CH=ETE ; //'0'
       _timeOffset=7200; 
       NTPClient timeClient(ntpUDP, "europe.pool.ntp.org",_timeOffset, 60000);//ete
       }
         }
     if ( ( m1==0x03) && (jd>0x24) && (nujour==7) && (heure==0x02) && (mn==0x00) && (CH==HIVER)) 
      {
          CH=ETE ; // ETE ='0'
          _timeOffset=3600;
          CPrint("Passage en Horaire d'Hiver ");
           NTPClient timeClient(ntpUDP, "europe.pool.ntp.org",_timeOffset, 60000);// été
       }
  */

  // Recup heure puis affichage
  timeClient.update();
  epoch = timeClient.getEpochTime(); // Heure Unix
  nujour = timeClient.getDay();    // jour de la semaine
  heure = timeClient.getFormattedTime(); // heure


 // Calcul de la date en convertissant le temps UNIX epoch
  time_t timestamp = epoch;
  struct tm * pTime = localtime( & timestamp );
  strftime( buffer,80, "%d/%m/%Y", pTime );

  // Serial.println(" ");
 

  switch (nujour) { // on determine le jour
      case 0: 
        jour = "dimanche";
        break;
      case 1:
        jour = "lundi";
        break;
      case 2: 
        jour = "mardi";
        break;
      case 3: 
        jour = "mercredi";
        break;
      case 4: 
        jour = "jeudi";
        break;
      case 5: 
        jour = "vendredi";
        break;
       case 6: 
        jour = "samedi";
        break;
    }
  
  // Envoi des donnees recuperees sur la liaison serie
  if (j%60==0)
  { 
     Serial.print("\r\nTemps UNIX : ");
     Serial.print(epoch);
  }

  Serial.print(" J=");
  Serial.print(j);  Serial.print(",");
 
  Serial.print(jour);
  Serial.print(",");
  Serial.print(timeClient.getFormattedTime());
  Serial.print(",");

 if( Once==1)
   {
    jd=(buffer[0]-48) *10 ;
   jd=jd+(buffer[1]-48);
   m1=(buffer[3]-48) *10;
   m1= m1+(buffer[4]-48);
   hh=(heure[0]-48)*10;
   hh= hh+ (heure[1]-48);
   mn=(heure[3]-48)*10;
   mn= mn+ (heure[4]-48);

   Serial.println(" ");
   Serial.print("mois="); Serial.print(m1,DEC);Serial.println(" ");
   Serial.print("jour="); Serial.print(jd,DEC);Serial.println(" ");
   Serial.print("heure=");Serial.print(hh,DEC);Serial.println(" ");
   Serial.print("minute="); Serial.print(mn,DEC);Serial.println(" ");
   Serial.println(" ");
   Once=0;
   }
  
  // Affichage sur oled ssd1331
   u8g2.clearBuffer();
   u8g2.setFont(u8g2_font_10x20_tf);
   u8g2.setCursor(8, 14);
   u8g2.print(jour);
     
  // u8g2.setFont(u8g2_font_7x14B_tf);
   u8g2.setFont(u8g2_font_ncenR18_tf ); // Font size 18
   if((j & 0x0001)>0)
   {
   u8g2.setCursor(8, 42); // was 8,28
   u8g2.print(temperatureC);
   u8g2.write(' ');u8g2.write(0xB0);u8g2.write('c');
   }
   else
   {
    u8g2.setCursor(8,42);
    u8g2.print(heure);
   }  

   u8g2.setFont(u8g2_font_7x14B_tf);
   u8g2.drawStr(8,64,buffer);
   u8g2.sendBuffer();
   j++;
   delay(900); // tempo de 1 sec

    Serial.print(buffer);
   
   sensors.requestTemperatures();
   delay(98);
   temperatureC = sensors.getTempCByIndex(0);
   if (temperatureC < -10.0) temperatureC= -9.99; 
   Serial.print(",DS#1= ");
   Serial.print(temperatureC);
   Serial.println(" degC");
}

/*

 
 ===================================

Creating BIN file "C:\Users\Paul\AppData\Local\Temp\arduino_build_309705/_ESP8266_HW364A-Rouge_server_NTP_2024.ino.bin" using "C:\Users\Paul\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2/bootloaders/eboot/eboot.elf" and "C:\Users\Paul\AppData\Local\Temp\arduino_build_309705/_ESP8266_HW364A-Rouge_server_NTP_2024.ino.elf"
"C:\\Users\\Paul\\AppData\\Local\\Arduino15\\packages\\esp8266\\tools\\python3\\3.7.2-post1/python3" -I "C:\\Users\\Paul\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\3.1.2/tools/signing.py" --mode sign --privatekey "D:\\_ESP8266_avec_OLED_HW-364A_2024\\_ESP8266_HW364A-Rouge_server_NTP_2024/private.key" --bin "C:\\Users\\Paul\\AppData\\Local\\Temp\\arduino_build_309705/_ESP8266_HW364A-Rouge_server_NTP_2024.ino.bin" --out "C:\\Users\\Paul\\AppData\\Local\\Temp\\arduino_build_309705/_ESP8266_HW364A-Rouge_server_NTP_2024.ino.bin.signed" --legacy "C:\\Users\\Paul\\AppData\\Local\\Temp\\arduino_build_309705/_ESP8266_HW364A-Rouge_server_NTP_2024.ino.bin.legacy_sig"
"C:\\Users\\Paul\\AppData\\Local\\Arduino15\\packages\\esp8266\\tools\\python3\\3.7.2-post1/python3" -X utf8 -I "C:\\Users\\Paul\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\3.1.2/tools/sizes.py" --elf "C:\\Users\\Paul\\AppData\\Local\\Temp\\arduino_build_309705/_ESP8266_HW364A-Rouge_server_NTP_2024.ino.elf" --path "C:\\Users\\Paul\\AppData\\Local\\Arduino15\\packages\\esp8266\\tools\\xtensa-lx106-elf-gcc\\3.1.0-gcc10.3-e5f9fec/bin" --mmu "-DMMU_IRAM_SIZE=0x8000 -DMMU_ICACHE_SIZE=0x8000"
. Variables and constants in RAM (global, static), used 31884 / 80192 bytes (39%)
║   SEGMENT  BYTES    DESCRIPTION
╠══ DATA     1612     initialized variables
╠══ RODATA   2480     constants       
╚══ BSS      27792    zeroed variables
. Instruction RAM (IRAM_ATTR, ICACHE_RAM_ATTR), used 60735 / 65536 bytes (92%)
║   SEGMENT  BYTES    DESCRIPTION
╠══ ICACHE   32768    reserved space for flash instruction cache
╚══ IRAM     27967    code in IRAM    
. Code in flash (default, ICACHE_FLASH_ATTR), used 274552 / 1048576 bytes (26%)
║   SEGMENT  BYTES    DESCRIPTION
╚══ IROM     274552   code in flash   
Multiple libraries were found for "NTPClient.h"
 Used: C:\Users\Paul\AppData\Local\Arduino15\libraries\NTPClient-master
 Not used: C:\Users\Paul\AppData\Local\Arduino15\libraries\ESP8266_Weather_Station
Using library NTPClient-master at version 3.1.0 in folder: C:\Users\Paul\AppData\Local\Arduino15\libraries\NTPClient-master 
Using library ESP8266WiFi at version 1.0 in folder: C:\Users\Paul\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\libraries\ESP8266WiFi 
Using library U8g2 at version 2.32.15 in folder: C:\Users\Paul\AppData\Local\Arduino15\libraries\U8g2 
Using library Wire at version 1.0 in folder: C:\Users\Paul\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\libraries\Wire 
Using library SPI at version 1.0 in folder: C:\Users\Paul\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\libraries\SPI 
C:\Users\Paul\AppData\Local\Arduino15\packages\esp8266\tools\python3\3.7.2-post1/python3 -I C:\Users\Paul\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2/tools/upload.py --chip esp8266 --port COM4 --baud 115200 --before default_reset --after hard_reset write_flash 0x0 C:\Users\Paul\AppData\Local\Temp\arduino_build_309705/_ESP8266_HW364A-Rouge_server_NTP_2024.ino.bin 
esptool.py v3.0
Serial port COM4
Connecting....
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: 84:f3:eb:d2:82:3a
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Compressed 310768 bytes to 227983...
Writing at 0x00000000... (7 %)
Writing at 0x00004000... (14 %)
Writing at 0x00008000... (21 %)
Writing at 0x0000c000... (28 %)
Writing at 0x00010000... (35 %)
Writing at 0x00014000... (42 %)
Writing at 0x00018000... (50 %)
Writing at 0x0001c000... (57 %)
Writing at 0x00020000... (64 %)
Writing at 0x00024000... (71 %)
Writing at 0x00028000... (78 %)
Writing at 0x0002c000... (85 %)
Writing at 0x00030000... (92 %)
Writing at 0x00034000... (100 %)
Wrote 310768 bytes (227983 compressed) at 0x00000000 in 20.0 seconds (effective 124.2 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...


*/